As long as the status of the case in not Pending case you can always take it back for completion by recalling the evaluation. This is done by using the Recall evaluation button, which you will find in the upper right corner of the case view. If the status is Pending case said option is no longer available. The solution is instead to ask the medical advisor to ask for a completion of the documents. This is done by asking the medical advisor of this via the message board (click on the message icon in the upper left corner of the case view).